even though the manual says the json extension is enabled by default and compiled into the core, I had to do a "yum install php-json" on centos 8 running php 7.2
The JSON extension is bundled and compiled into PHP by default.
As of PHP 8.0.0, the JSON extension is a core PHP extension, so it is always enabled.
Informazioni per l'installazione di questa estensione PECL possono essere trovate nel capitolo del manuale intitolato Installazione delle estensioni PECL. Informazioni aggiuntive come nuove release, download, file sorgenti, informazioni del manutentore e un CHANGELOG possono essere trovate qui: » https://pecl.php.net/package/json
even though the manual says the json extension is enabled by default and compiled into the core, I had to do a "yum install php-json" on centos 8 running php 7.2On Ubuntu 13.10 you have to install this extension first (PHP 5.5.3):
apt-get install php5-json
(Don't forget to restart web server.)